CN105874714A - 支持多模式可配置的六输入查找表结构和fpga器件 - Google Patents
支持多模式可配置的六输入查找表结构和fpga器件 Download PDFInfo
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- CN105874714A CN105874714A CN201480013815.1A CN201480013815A CN105874714A CN 105874714 A CN105874714 A CN 105874714A CN 201480013815 A CN201480013815 A CN 201480013815A CN 105874714 A CN105874714 A CN 105874714A
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17724—Structural details of logic blocks
- H03K19/17728—Reconfigurable logic blocks, e.g. lookup tables
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0008—Arrangements for reducing power consumption
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/1731—Optimisation thereof
- H03K19/1732—Optimisation thereof by limitation or reduction of the pin/gate ratio
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/1733—Controllable logic circuits
- H03K19/1737—Controllable logic circuits using multiplexers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17748—Structural details of configuration resources
- H03K19/17758—Structural details of configuration resources for speeding up configuration or reconfiguration
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- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Logic Circuits (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
Abstract
Description
端口 | 位宽 | 输入输出 | 功能描述 |
f0 | 1 | I | 数据输入 |
f1 | 1 | I | 数据输入 |
f2 | 1 | I | 数据输入 |
f3 | 1 | I | 数据输入 |
f4 | 1 | I | 数据输入 |
f5 | 1 | I | 数据输入 |
A | 1 | O | 第一LUT5的数据输出 |
B | 1 | O | LUT6或第二LUT5的数据输出 |
Claims (7)
- 一种支持多模式可配置的六输入查找表结构,其特征在于,所述六输入查找表具有六个信号输入端和两个信号输出端;所述六输入查找表结构包括:第一五输入查找表、第二五输入查找表、第一选通器和第二选通器;其中,所述第一五输入查找表接收所述六输入查找表的五个信号输入端输入的五位数据信号,根据所述五位数据信号输出第一输出信号,并将所述第一输出信号由所述六输入查找表的第一信号输出端输出;所述第二五输入查找表接收所述六输入查找表信号的所述五个信号输入端输入的五位数据信号,根据所述五位数据信号输出第二输出信号;所述第一选通器根据设定的配置模式输出控制信号,控制第二选通器选通输出所述第一输出信号或第二输出信号,并将所述第二选通器选通输出的第一输出信号或第二输出信号由所述六输入查找表的第二信号输出端输出。
- 根据权利要求1所述的结构,其特征在于,所述第一选通器具体为二选一选通器,包括第一输入端、第二输入端和输出端;所述第一选通器的第一输入端接入除所述五个信号输入端外的其余一个信号输入端输入的第六位数据信号,第二输入端接入预置常量;所述第一选通器的输出端与所述第二选通器的选通信号输入端相连接。
- 根据权利要求2所述的结构,其特征在于,当所述第一选通器根据所述配置模式输出所述预置常量时,所述第二选通器根据所述预置常量选通输出所述第二输出信号,并将所述第二输出信号由所述六输入查找表的第二信号输出端输出,用以所述六输入查找表结构实现两个五输入查找表的逻辑功能。
- 根据权利要求3所述的结构,其特征在于,当所述第一选通器选通输出所述预置常量时,所述六输入查找表的除所述五个信号输入端外的其余一个信号输入端还用于,向与所述六输入查找表相连接的加法器输入加数。
- 根据权利要求2或3所述的结构,其特征在于,所述预置常量为0。
- 根据权利要求2所述的结构,其特征在于,当所述第一选通器根据所述配置模式输出所述第六位数据信号时,所述第二选通器根据所述第六位数据信号选通输出所述第一输出信号或第二输出信号,并将所述第一输出信号或第二输出信号由所述六输入查找表的第二信号输出端输出,用以所述六输入查找表结构实现六输入查找表的逻辑功能。
- 一种FPGA器件,其特征在于,所述FPGA器件包括上述权利要求1-6任一所述的支持多模式可配置的六输入查找表结构。
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PCT/CN2014/093567 WO2016090597A1 (zh) | 2014-12-11 | 2014-12-11 | 支持多模式可配置的六输入查找表结构和fpga器件 |
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CN105874714A true CN105874714A (zh) | 2016-08-17 |
CN105874714B CN105874714B (zh) | 2020-02-14 |
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US (1) | US9584128B2 (zh) |
CN (1) | CN105874714B (zh) |
WO (1) | WO2016090597A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113746473A (zh) * | 2021-08-19 | 2021-12-03 | 北京中科胜芯科技有限公司 | 一种可以实现分布式存储器功能的查找表结构 |
CN113746474A (zh) * | 2021-08-19 | 2021-12-03 | 北京中科胜芯科技有限公司 | 一种多粒度查找表结构 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10656915B2 (en) * | 2018-07-13 | 2020-05-19 | Achronix Semiconductor Corporation | Efficient FPGA multipliers |
US10936286B2 (en) * | 2018-11-13 | 2021-03-02 | Microsemi Soc Corp. | FPGA logic cell with improved support for counters |
GB2587405B (en) * | 2019-09-27 | 2023-04-19 | Superfastfpga Ltd | Determining sums using logic circuits |
US11671099B2 (en) * | 2021-05-21 | 2023-06-06 | Microchip Technology Inc. | Logic cell for programmable gate array |
CN117157880A (zh) * | 2021-05-21 | 2023-12-01 | 微芯片技术股份有限公司 | 用于可编程门阵列的逻辑单元 |
Citations (4)
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US20040155676A1 (en) * | 2003-02-11 | 2004-08-12 | Sinan Kaptanoglu | Fracturable incomplete look up table for area efficient logic elements |
CN101312347A (zh) * | 2007-05-21 | 2008-11-26 | 阿尔特拉公司 | 具有带有改进的逻辑单元功能性的复杂逻辑块的可编程逻辑器件 |
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CN103762974A (zh) * | 2014-01-26 | 2014-04-30 | 中国电子科技集团公司第五十八研究所 | 多功能可配置的六输入查找表结构 |
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CN102147720B (zh) * | 2011-03-18 | 2014-04-09 | 深圳市国微电子有限公司 | 用查找表实现多输入逻辑项之间的运算的装置及方法 |
US20130278289A1 (en) * | 2012-04-18 | 2013-10-24 | Te-Tse Jang | Method and Apparatus for Improving Efficiency of Programmable Logic Circuit Using Cascade Configuration |
US9916131B2 (en) * | 2013-10-02 | 2018-03-13 | The Penn State Research Foundation | Techniques and devices for performing arithmetic |
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2014
- 2014-12-11 WO PCT/CN2014/093567 patent/WO2016090597A1/zh active Application Filing
- 2014-12-11 CN CN201480013815.1A patent/CN105874714B/zh active Active
- 2014-12-11 US US14/761,410 patent/US9584128B2/en active Active
Patent Citations (4)
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US20040155676A1 (en) * | 2003-02-11 | 2004-08-12 | Sinan Kaptanoglu | Fracturable incomplete look up table for area efficient logic elements |
CN101312347A (zh) * | 2007-05-21 | 2008-11-26 | 阿尔特拉公司 | 具有带有改进的逻辑单元功能性的复杂逻辑块的可编程逻辑器件 |
CN103746686A (zh) * | 2014-01-26 | 2014-04-23 | 中国电子科技集团公司第五十八研究所 | 二维可扩展多路复用器的级联结构 |
CN103762974A (zh) * | 2014-01-26 | 2014-04-30 | 中国电子科技集团公司第五十八研究所 | 多功能可配置的六输入查找表结构 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113746473A (zh) * | 2021-08-19 | 2021-12-03 | 北京中科胜芯科技有限公司 | 一种可以实现分布式存储器功能的查找表结构 |
CN113746474A (zh) * | 2021-08-19 | 2021-12-03 | 北京中科胜芯科技有限公司 | 一种多粒度查找表结构 |
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Publication number | Publication date |
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US20160315619A1 (en) | 2016-10-27 |
CN105874714B (zh) | 2020-02-14 |
US9584128B2 (en) | 2017-02-28 |
WO2016090597A1 (zh) | 2016-06-16 |
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